Trump warned that recent demonstrations over racial inequality threatened the foundations of the country's political system. He specifically said: "Make no mistake, this left-wing cultural revolution is designed to overthrow the American revolution,"
As usual Trump's words do not really convey coherent thoughts in a well thought out platform. His words are nothing but memes meant to trigger a certain reaction, because such are the words of a con man and a narcissist. But the direction of his speech does illuminate what he is saying and who he is speaking to. As CNN's Brian Stelter says on air, you have to be plugged in to what the right wing media is trying to sell for Trump's speech to make any sense. So it is focused on that base, but it also reveals an underlying current. The dishonest and corrupt current that exists everywhere in society that is ready to cash in the moment laws change in their favor. Such as ready to start dumping pollutants into the environment to save money, ready to raid employee health and retirement funds, ready to take government money dishonestly, etc
Destroying the America we know, that Trump speaks of, is the delusion harbored by consumers of right wing media plus the America that shits on everything for profit.